In JavaScript, every function has a prototype property that is used to attach properties and methods that should be inherited by objects created from that function. When an object is created from a constructor function using the 'new' keyword, it inherits the properties and methods from the constructor function's prototype.
Here is an example of a simple prototype in JavaScript:
function Person(name)
{
this.name = name;
}
Person.prototype.greet = function() {
return 'Hello, my name is ' + this.name;
};
var person1 = new Person('Alice');
console.log(person1.greet()); // Output: Hello, my name is Alice
